Hello, I'd like to help you with your question.
It certainly sounds like he was more intetested in you than selling you something. If the other staff members were coming and going and making inquiries about him being done soon, then what he was doing was not typical behavior for him. And in that way, he was probably interested in you.
His interest also seems to be personal because most sales men would stop the attention once they know you are interested in buying whatever they are selling. Since he did not stop and did not ask you for money, his interest seems personal.
I hope this has helped you,
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